Island



(No Model.) 3 Sheets-Sheet 1.

J. E. WALOOTT.

MACHINE FOR MAKING THE LOOPS 0F CHAIN SWIVELS.

No. 273,919. Patented Mar. 13,1883.

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(No Model.) 3 Sheets-Sheet 2.

J. E. WALOOTT.

MACHINE FOR MAKING THE LOOPS 0F CHAIN SWIVELS. No. 273,919. Patented Mar. 13,1883.

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N. PETERS. Piww-um n mr. Washmglon. nv c.

(No Model.) 3 Sheets-Sheet 3.

J. E. WALOOTT.

MACHINE FOR MAKING THE LOOPS 0P CHAIN SWIVELS.

vN0. 273,919. Patented Mar. 13,1883. 1 2 3 l 5 6 I 8 l WITNIEEEEI JNVEZVTfl-Ef JABEZ E. WALOOTT, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO FREDERICK I. MARGY, OF SAME PLACE.

MACHINE FOR MAKlNG THE LOOPS OF CHAIN-SWIVELS.

SPECIFICATION forming part of Letters Patent No. 273,919, dated March 13, 1883.

Application filed November 13, 1882.

To all whom it may concern Be it known that I, JABEZ F. WALootr'r, of the city and county of Providence, and State of Rhode Island, have invented a new and useful Improvement in Machines for Making the Loops of Chain-Swivels; and I hereby declare that the following is a full, clear, and exact description of the same, reference being bad to the accompanying drawings, forming part of this specification.

This invention refers to an improvement in machines for making the loops of chain-swivels from wire fed to the same without the intervention of hand labor.

The invention consists in the peculiar and novel construction and arrangement of the various operating parts of the machine, by which a wire is fed to the machine, a length separated. bent, formed, and swaged to form the loop for a chain swivel, as will be more fully set forth hereinafter, and particularly pointed out in the claims.

Figure l is a top view of the machine, showing the wire-feeding device, the cutter, and the devices for bending the loop and swaging the same. Fig. 2 is a view of the loop as it comes from the machine. Fig. 3 is a view of the completed chain swivel, the column being shown in section. Fig. 4 is an enlarged view, showing the bendingjaws and the wire-cutter. Fig. 5 is an enlarged view, showing the bending-jaws extended over the former before the sameare closed around the former. resents the bending-jaws closed over the former and the closing-pawl in place. Fig. 7 represents the swaging-tool in contact with the loop. Fig.8 is a view of the cam and lever by means of which the former is withdrawn. Fig. 9 is a. view of the wire-feeding lever and the cam operating the same. Fig. 10 is a view of the lever for holding the wire and the cam operating the same. Fig. 11 is a diagram showing the movements of the various operating parts and their relative position during the formation of one loop.

In the drawings, A is the driving-pulley, secured to the shaft A; and A is the loose pulley, onto which the belt is shipped when the machine is to be stopped. A is a balance-wheel.

Motion is communicated by means of beveled gears from the shaft A to the shafts B and C,

Fig. 6 rep- (No model.)

and from these three shafts all the parts are operated by which the loop is formed.

(t represents the wire from which the loops are made. It passes through the slidingclutch a, which is operated by the lover a", the end of which bears against the face-cam a on the end ofthe shaft 0. The slide at is drawn back and the end of the lever held against the face of the cam a by the spiral spring a. Ateach revolution of the shaft 0 a length of wire is fed into the machine sufficient to make one loop. To prevent the slide a from drawing the wire out again when the slide moves back, the clamp bis placed in the path of the wire. It consists of a cylinder provided with the round hole b, and a piston connected with the hinged lever 12 the other end of which bears on the cam b, as is clearly shown in Fig. 10..

The wire, being square, passes through the hole 0, and the piston, being forced down on the wire, tirmly holds the same. The wire now passes through aslot in the cuttercand through a similar slot or hole in the fixed plate 0. The cutter is reciprocated sufficiently to shear oifor cut the wire by means of the slide 0 to which it is secured, and which is operated by the cam 0 having a cam-groove on one side into which a projection from the slide 0 enters, and by which the cutter is reciprocated once during each revolution of the shaft A. The end of the wire rests against the stop 0, which stop is adjustable, so that the length of the wire fed can be limited by the same to the exact length required. The separated piece of wire lies now in front of the former (1, around which it is to be bent. The bending-jaws d d are pivotally secured to the slide D, working in proper Ways and reciprocated by the cam I). They now approach the wire, as is shown in broken lines in Fig. 4, until they have bent the wire, as is shown in Fig. 5. The cams d d on the shaft 0 now force the levers (l d outward, thereby closing the bending-jaws d. d, as is shown in Fig. 6. At the same time the pawl c, secured to the slide 6 and operated by the cam E, advances and bends the lower end of the wire across the narrow face of the former d, to close the loop. The pawl e withdraws as soon as the wire is bent, and the pointed swagef, sccured to the adjustable slidef, operated by the cam F, advances and enters the wire, forcing a portion of the metal toward the corner of the loop, into which the wire is inserted to form the hinge of the pawl when separated bya diagonal cut, as is shown in Fig. 3. The loop is now completed. The former dis withdrawn 'below the plate, through which it projects, by

the arm gentering an eye on the lower end'of the stem, to which theformer is secured. The

arm 9 is secured to the rock-shaft g, on which tension of the coiled spring at, and the jaws open and drop the formed loop. At this moment the former d is raised again above the plate, a new length of wire is inserted, and the operation of bending, closing, and swaging a loop repeated.

, By this construction a compact machine is produced, by which the loops for chain-swivels are made quickly, cheaply, and withabsolute uniformity, a complete loop being produced, ready for slitting and drilling, at each revolution of the driving-pulley. All the parts are strong, durable, and ready of access.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent 1. In ,a machine for bendingloops for chainswivels, the combination, with a former and means for feeding, cutting, and b nding the wire, substantially as herein described, of the pawl e, constructed to close the loop, and the swagef, constructed to indent the wire and finish the loop, as described.

3. The combination, with the driving-pulley A and the shafts A, B, and (J, connected together by beveled gearing, of the cams D, d, G E, F, 0 and a secured to the said shafts, and the devices herein described operated by the cams to cut, bend, close, and swage aloop forachain-swivel, substantially as described.

4. The combination, with the former d, of the wire-feeding slide a, the clamp b, the cutter 0, and stop 0 the reciprocating jaws d d, constructed to bend the wire around the former, the pawl e, and swagef, all operated, substantially as described, by cams secured to the shafts A, B, and G, as and for the purpose set forth.

JABEZ E. W'ALGOTT.

Witnesses:

J. A. MILLER, Jr., M, F. BLIGH. 

